internal bool UserLogout(ReqLogOut objReq)
        {
            using (var db = new WizzDataContext())
            {

                tblUser tUser = new tblUser();
                int fkuserid = Convert.ToInt32(objReq.userId);
                tUser = db.tblUsers.Where(x => x.pkUserId == fkuserid).FirstOrDefault();
                if (tUser == null)
                    return false;
                else
                {
                    tUser.deviceToken = null;
                    db.SubmitChanges();
                    return true;
                }
            }
        }
        public Response<string> LogOutService(ReqLogOut objReq)
        {
            Response<string> response = new Response<string>();
            List<string> objResp = new List<string>();
            try
            {
                WebMethods objDBMethod = new WebMethods();
                if (CheckRequestIsvalidornot(this.Request))
                {
                    if (ModelState.IsValid)
                    {
                        if (objDBMethod.UserLogout(objReq))
                            response.Create(true, Messages.FormatMessage(Messages.Success, "Logged out"), Messages.AppVersion, objResp);
                        else
                            response.Create(false, Messages.ErrorOccure, Messages.AppVersion, objResp);
                    }
                    else
                        response.Create(false, ModelState.Values.FirstOrDefault().Errors.FirstOrDefault().ErrorMessage, Messages.AppVersion, objResp);
                }
                else
                    response.Create(false, Messages.FormatMessage(Messages.InvalidReq), Messages.AppVersion, objResp);

            }
            catch (Exception ex)
            {
                object session = new JavaScriptSerializer().Serialize(objReq);
                LogManager.Error("Error occured while Processing Webservice request :{0}", ex, session, ex.Message);
                response.Create(false, Messages.FormatMessage(Messages.ErrorOccure), Messages.AppVersion, objResp);
            }
            return response;
        }